Water heater and purifier.



No. 870,920. PATENTED NOV. 12, 1907.

J; E. WOOD.

WATER HEATER AND PURIFIER.

APPLICATION FILED HAY 27,1907.

JOHN EDWARD WOOD, OF NOTTINGHAM, ENGLAND.

WATER HEATER AND PURIFIER.

Specification of Letters Patent.

Patented Nov. 12, 1907.

Application filed May 27,1907- Serial No. 375,930!

To all whom it may concem:

. Be it known that I, JOHN EDWARD Woon, a subject of the King of GreatBritain, and resident of the city of Nottingham, in the county of thesaid city, England, have invented new and useful Improvements in WaterHeaters and Purifiers, of which the following is a specification.

This invention relates to improvements in an apparatus for heating andpurifying water for steam generators, and has particular reference toimprovements in an apparatussuitable for use in the steam space ofCornish, Lancashire, and similar steam generators; the object of thepresent invention beingthe construction of an apparatus, for use insidethe generator, by and through which all the feed water delivered to thegenerator is exposed to the action of the steam inside the generator,and is directed through purifiers or scrubbers, also, the provision ofsettling tanks for collecting the impurities given up by the water andmeans by which such impurities can at any time be removed from thegenerator.

In the accompanying drawings Figure 1 is the side elevation of part of asteam generator which is broken to show the construction and arrangementof the improved apparatus, and Fig. 2 is a plan of the improvedapparatus. I

Theimproved heating and purifying apparatus comprises a tray a'which isslightly inclined from the point at which the feed water is delivered toinsure the water flowing towards the delivery end of the tray. The feedwater is forced into the generator by a pump, injector, or thelikethrough a pipe 6 which is bent upwards through and above the tray a,and at its upper end is provided with a spraying hood 0 by which thewater from the pipe b is broken up and delivered in the form of a sprayor in fine streams on to the tray a, which is widened as shown toreceive the water, and this water flows down the tray in a thin filmwhich being exposed totheaction of the steam is raised to a hightemperature and part of it evaporated. The unevaporated water then flowsinto the settling chamber d and mixes with a comparatively large body ofwater. Some of the impurities then fall to the bottom of the tank and asthe water leaves the tank it is compelled to pass through a filter orscrubber e. After leaving the tank the water flows over another lengthof the tray and enters a second settling tank f where further impuritiesare deposited and the water againfiltered by the filter gwhich isarranged bottom of this trough is inclined from both sides towards thecenter. The filters or scrubbers e and g are in the form of boxes orcases which have perforated top and bottom plates and are filled withpieces of coke or similar filtering medium. These filters are detachablycarried by the settling tanks and the filter g has finer holes and afiner filtering medium than the filter e to insure the separation fromthe water of impurities which have passed through the filter e. Forremoving the sediment at the bottom of the settling tanks a blow-oilpipe I; is provided. This pipe is arranged in any convenient positionrelatively to the other parts of the apparatus and is fitted with branchpipes l, the open ends of which are fixed near the lowest points in thesettling tanks.

The tray, and all the connected parts, are made in sections 01' such asize that they can be introduced into the generator or, and when insidethe generator they can be fastened together, and are held in the steamspace by bolts from the top of the generator, or by supporting bracketsfrom the fines or other convenient part of the generator.

By means of an apparatus of the kind herein described and by arrangingsuch apparatus in the steam space in the generator all the feed waterdelivered to the generator is exposed to the direct action of the steam.This raises the water to a high temperature, evaporates a portion of it,and thereby liberates mineral matters which are collected in thesettling tanks while grease and other objectionable matters areseparated from the water by means of the purifiers.

The length of the tray and the number of settling tanks and purifiersare varied according to the type and size of the generator and the kindof water used.

I claim.

1. The combination of a tray, 21 series of settling chambersintermediate between its ends arranged at intervals apart, means forbreaking up or spraying the water as it is fed into the boiler, arrangedat one end of the tray, means for purifying the water in each settlingchamber, and a settling chamber at the discharge end of the tray.

2. The combination of an inclined tray formed of a series of sectionsover which the water flows in a thin sheet, a settling chamber locatedbetween adjoining sec tions, means for feeding water to the head end ofthe tray, and means for spraying or breaking up the Water as it is fed.

3. The combination of an inclined tray, and a series of settling tanksintermediate between its ends and arranged at intervals apart, each ofsaid tanks being formed with a depressed portion or trough in its bottomto receive the impurities in the water.

-;L. The combination of a feed water pipe with a hood or cowl forbreaking up the feed water, an inclined tray, a settling tank with atrough at one end, a purifier and a blow oil pipe arranged in the steamspace of a steam generator substantially as herein set forth.

5. The combination of :1 feed water pipe with a hood or cowl forbreaking up the water, an inclined tray in sections, two settling tankswith troughs at one end, a

coarse purifier or scrubber in one settling tank, a fine purifier orscrubber in the other tank, and a blow off pipe with branch connections,arranged in the steam space of a steam generator substantially as hereinset forth.

6. The combination of a feed Water pipe, with a cowl or hood, aninclined tray settling tanks with troughs at one end, purifiers orscrubbers in such tanks arranged with one part above the level of the.tray, a conical bahile at the delivery end of the tray, a hemisphericalsettling tank from which the water flows into the gener- 1O ator, ablow-0E pipe and branch connections between the blow-01f pipe andsettling tanks, arranged in .the steam space of a steam generatorsubstantially as herein set forth.

JOHN EDWARD WOOD.

Witnesses: I

WILLIAM H. POTTER, JOHN ARCHER.

